Northern Ireland's Brobdingnagian stepping stones.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A natural gas leak provides a flickering flame beneath a waterfall.

Tiny horses tethered to antique rings are scattered around the city.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

Its collection commemorates the author of the iconic children's book "Heidi."

Cat art as far as the eye can see.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

The eccentric mansion of one the most popular horror authors of modern times.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

The Andean town where every single building is decorated with a brightly colored frieze.

Erosion and time have created a naturally-formed water park.

The mysterious round rocks of Schooner Gulch.

A Lycian city of the dead carved into the hillside of Southern Turkey, complete with startlingly human touches.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

This wondrous waterfall rushing down a green-covered mountain wasn't discovered until 2010.

The world's first interactive human body museum also serves as a chair for a giant orange man.

This ultra-modern wooden boardwalk turns the ocean into a swimming pool.